Saturday, July 24, 2010

You can manually change the power consumption of your notebook PC and conserve hp laptop battery power (such as hp 510 battery, hp pavilion dm3 battery, hp pavilion dv2000 battery, hp g7000 batteries, hp pavilion dv6000 battery etc).1. Reduce the number of open applications . Every application uses memory, and therefore power, even when the application widow is minimized. Exit any application the is not being used.2. Reduce the brightness of the screen to the minimum readable level. Use the Fn and F7 or F8 keys to adjust the brightness.3. Remove peripherals when not in use. External hard drives, CD-ROMs, Zip drives, PC cards, and other peripheral devices can draw power from your hp battery (buy replacement hp laptop battery in uk. hp dv2500 battery, hp dv6500 battery etc) even when they are not in active use. Disconnect them when you are finished using them.4. Reduce the speed of your processor. The faster your computer works, the more quickly it uses up the supply of power. You can extend the charge of your laptop battery by slowing down your processor’s speed. Methods to reduce processor speed vary from model to model, and your manual should provide instructions for doing so.5. Turn off the Wireless On-Off button when it is not in use. If your notebook has one, press the Wireless On-Off button so that the light turns off.6. Change the power option setting from High performance to either HP Recommended or Power saver to conserve hp battery power.

Friday, July 2, 2010

Anyone who uses a laptop on an airplane would love a single laptop battery to last through a trans-American flight. Now researchers at Intel believe that they can double a laptop's battery (buy cheap laptop batteries ?) life without changing the battery (such as dell 1545 battery, hp 510 battery, hp 550 battery) itself. Instead, they would optimize power management--system wide--of the operating system, screen, mouse, chips inside the motherboard, and devices attached to USB ports.

To be sure, manufacturers and researchers have been exploring piecemeal ways to make portable computers more energy efficient. Operating systems are designed to deploy power-saving screen savers and put an entire system to sleep if its owner hasn't used it after a while. And Intel's forthcoming Atom, a microprocessor for mobile Internet devices, can be put to sleep at up to six different levels, depending on the types of tasks that it needs to do.

But the problem with these approaches is that they're not coordinated across the entire device. Intel's prototype power-management system is aware of the power that's used by all parts of a laptop, as well as the power requirements of a person's activity, and it shuts down operations accordingly, says Greg Allison, business development manager. The project, called advanced platform power management, was demonstrated on Wednesday at an Intel event in Mountain View, CA.

Allison gives this example: today, when a person reads a static e-mail, the screen still refreshes 60 times a second, and peripherals such as the keyboard, mouse, and USB devices drain battery power while awaiting instructions. "We're burning energy even when we don't need to," Allison says. In this situation, Intel's system would save power by essentially taking a snapshot of the screen that a person is reading and saving it to a buffer memory. So instead of refreshing, the screen would maintain an image until a person tapped a button on the keyboard or moved the mouse (the keyboard and mouse would also stay asleep until activated).

All the while, the operating system will be monitoring use of other applications, restricting operations to those that aren't being actively used. And if there are any devices plugged into a USB port, such as a flash-memory stick, the system would put them to sleep. At the same time, explains Allison, energy-monitoring circuits on Intel chips will put unnecessary parts of the microprocessor to sleep. It takes 50 milliseconds for the entire system to spring to life, he says, a length of time imperceptible to the user.

Intel isn't the first to think of the idea of integrating power-saving technology throughout a device. One Laptop per Child (OLPC), the nonprofit that builds inexpensive, rugged laptops meant for children in the developing world, set the standard with a gadget that consumes one-tenth of the power of a conventional laptop. Granted, OLPC's laptop doesn't have the capabilities of consumer machines, but it does show what is technically achievable.

There are definitely advantages to this systemic approach, says Seth Sanders, a professor of electrical engineering and computer science at the University of California, Berkeley. "Comprehensively looking through the system at all of the different pieces that are cycling unnecessarily provides an opportunity [for power savings]," he says.

Allison says that the company is already talking with operating-system vendors to explore what it would take to integrate this approach into software. And as a major contributor to the new USB 3.0 standards, Intel will have some say in how much power forthcoming USB devices will use. In addition, Allison says, the company is trying to secure deals with display and hardware vendors. "This won't happen in the next three years," he says. But he suspects that pieces of the new power-management system will find their way into laptops within five years.

Thursday, July 1, 2010

There are actions you can take to make your laptop battery last longer during each charge cycle and live longer over many cycles. HP laptop battery always recommends following the instructions for charging and storage that came with the hp battery or notebook. On this page we offer additional suggestions to help you get the most from your portable power supply.

2. Make sure your battery gives the power you need, when you need it. Power Options in Windows XP allow you to control the power management features of your notebook PC.

3.Learn more about the Power Options in Windows by visiting Microsoft's support site

4. Learn the tips for conserving battery power on notebook PCs.

5. Reduce the brightness of the screen to the minimum readable level. Use the Fn and F7 or F8 keys to adjust the brightness.

6. Remove peripherals when not in use. External hard drives, CD-ROMs, Zip drives, PC cards, and other peripheral devices can draw power from your battery even when they are not in active use. Disconnect them when you have finished using them.

7. Reduce the speed of your processor. The faster your computer works, the more quickly it uses up the supply of power. By cutting down on processor speed, you can extend the charge of your battery. Methods to reduce processor speed vary from model to model, and your manual should provide instructions for doing so.

8. Turn off the Wireless On-Off button when it is not in use. If your notebook has one, press the Wireless On-Off button so that the light turns off.

9. Learn some 'Best Battery care practices'(1) Store Li-Ion laptop batteries between 20°C and 25°C (68°F and 77°F) with 30% to 50% charge.(2) Do not leave hp batteries (hp 550 battery, hp pavilion dm3 battery)exposed to high temperatures for extended periods. Prolonged exposure to heat (for example, inside a hot car) will accelerate the deterioration of Li-Ion cells.(3) Remove the battery if the notebook will be stored (turned off and not plugged into AC power) for more than 2 weeks.(4) Remove the hp pavilion battery (pavilion dm3 battery) if the notebook will be plugged into AC power continuously (via a wall adapter or docking station) for more than 2 weeks.

10. Calibrate the notebook PC battery.Short discharges and recharges do not fully synchronize the battery's fuel gauge with the battery's state-of-charge. This can result in the amount of power available in one cycle being less than expected or the laptop battery meter being inaccurate.Under normal usage, batteries should be calibrated a minimum of once every 3 months.